Valve and grinding mechanism therefor



H. C. BROWN.

VALVE AND GRINDlNG MEcHAmsM THEREFoR.

APPLICATION FILED OCT. 9,1920.

Patented Sept. 27,

" UNITED STAT Es PATENT caricia.'A

HUGH C. BROWN, OF PHILADELPHIA, I EEINNSYLVANIA.-

VALVE AND GRINI-)ING MECHANISM 'lHERIElIEOBh` Specification of Letters Patent. Patented Sept. 27, 19x21.

Application filed 0ct0ber 9, 1920. Serial No. 415,771.

To all 'whom t may concern.'

Be it known that I, HUGH C. BROWN, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and Improved Valve. and Grinding Mechanism Therefor, of which the following is a full, clear, and exact description.

This invention relates to improvements in valves and grinding mechanisms therefor, an object of the invention being to provide a valve and a grinding mechanism therefor which may be moved into locked engagement with the valve to impart simultaneous rotary and longitudinal movement in both directions during the grinding operation.

A further object is to provide a valve which is especially adapted to receive my improved tool.

Vhile my pending applicationl for Letters Patent bearing Serial No. 338973 which was filed on November 18, 1919, discloses the broad idea of providing such a mechanism,

this invention has for its object to provide an improved construction of valve and grinding tool which more efliciently performs the functions for which they are intended.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully yhereinafter described and pointed out in the claims.

In the accompanying drawings- Figure 1 is a view in side elevation of my improved grinding tool operatively connected to my improved valve with parts broken away and shown in section for clearness.

Fig. 2 is an edged view of Fig. 1.

Referring in detail to the drawings, 1 rep resents a puppet valve which is associated with a valve stem 2, and which is provided with ka pair of diametrically opposed spanv ner receiving recesses 3. The recesses 3 are located at an angle to each other and to the longitudinal axis of the valve.

To operate the valve I provide a tool which comprises a shank-4 having at one end an integral fixed jaw 5 of the general curved or hook shape shown. At the point of juncture of the shank 4 and the fixed jaw 5, a pivoted jaw 6 of the same general curved or hook shape as jaw 5 is operatively secured to the tool by a rivet 7. A spring 8 is interposed between the shank 4 and a finger lever 9 on the movable jaw, and serves to hold the movable jaw in normal position. A stop 13 may be provided to retain the jaws in open position when the tool is disengaged from a valve.

Any suitable handle such as 10 is provided on the upper end of the shank 4 and the handle may be formed with a slot 11 to receive a lever or arm, and a milled surface 12 to provide a friction grip. However, the particular form of handle forms no part of this invention and any desired kind may be utilized.

The Operation is as follows: To couple the operating tool toL the valve, the finger lever 8 is pressed toward the shank 4 to force the free end of the movable jaw 6 away from the fixed jaw 5 and thus permit a ready entrance of the jaws into the recesses 3. The pressure of the spring 8 will maintain the jaws in coupled relation to its valve so that the valve will be moved in all directions with the operating tool, hence permitting the ordinary valve grinding operation, consisting of simultaneous rotary and longitudinal movements in both directions to be carried out.

While I have illustrated a preferred embodiment of my invention, it is apparent that various changes and alterations might be made in the general form of the parts described without departing from my invention, and hence I do not wish to limit myself to the precise details set forth, but shall consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of the appended claims.

What I claim is:

1. A valve grinding tool, comprising a shank, tensionof one end of the shank, a movable jaw shaped in conformity with the fixed jaw and pivoted to the shank at the inner end of the fixed jaw, said movable jaw including an integral finger receiving extenn sion, an expansion spring interposed between the extension and the shank tending tc olose the jaws, and means limiting the aca curved fixed jaw forming an exshank,` :1-` ourved fixed jaw forming an eX- tension of one end of the shank, a movable jaw shaped in conformity With the Xed jaw and pivoted to the shank at the inner end of the iXed jaw, said movable jaw including an integral finger receiving eXtension, an expansion spring interposed loetween the extension and the shank tending to close the aWs, and means limiting the action of the spring, said means including a lug carried by the movable jaw adjacent its pivotal point and a stop on the fixed jaw engageable with tlielug.

HUGH C. BROWN. 

